Abstract Whereas normal yield tables are accepted as the basis for predicting yields in even-aged forests their use often leads to incorrect results. They presuppose a stationary normality of stocking, a condition which does not prevail in nature, as proven by several writers. The purpose of this paper is to develop the theory that second-growth stands of loblolly pine have a measurable trend towards normality of stocking, with increasing age. The theory is developed from data of temporary sample plots and upheld by data from permanent sample plots.
R. W. Wellwood (Mon,) studied this question.